FOD2743AT Equivalent & Substitute Parts

Part Overview

The FOD2743AT is an optoisolator with transistor output manufactured by onsemi, designed for applications requiring galvanic isolation up to 5000Vrms. This component features a single channel configuration with DC input and transistor output, housed in an 8-DIP package suitable for through-hole mounting.

The FOD2743AT carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

FOD2743AT

onsemiIn Stock: 963FOD2743AT Datasheet

Current PartRFQ

FOD2743BTV

onsemiIn Stock: 1550FOD2743BTV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FOD2743AT is determined by strict equivalence across the following critical parameters:

• Voltage - Isolation: 5000Vrms
• Number of Channels: 1
• Input Type: DC
• Output Type: Transistor
• Current Transfer Ratio: 50% (Min) @ 1mA and 100% (Max) @ 1mA
• Voltage - Output (Max): 70V
• Current - Output / Channel: 50mA
• Voltage - Forward (Vf) (Typ): 1.07V
• Vce Saturation (Max): 400mV
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-DIP (0.400", 10.16mm)
• Mounting Type: Through Hole

The FOD2743BTV meets all these criteria and is classified as a direct substitute. The primary distinction is product status: FOD2743BTV is Active, whereas FOD2743AT is Obsolete.

Parameter Comparison

Engineering Selection Recommendations

The FOD2743BTV is the direct substitute for FOD2743AT. Both components share identical electrical and mechanical specifications across all critical parameters. The FOD2743BTV offers the advantage of Active product status, ensuring ongoing manufacturer support and availability. Additionally, FOD2743BTV carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. Both parts maintain REACH Unaffected status and share identical ECCN and HTSUS classifications.

For new designs or production continuity, FOD2743BTV is the appropriate selection. For legacy system maintenance where FOD2743AT is currently deployed, FOD2743BTV provides direct functional equivalence without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can FOD2743BTV be used as a direct replacement for FOD2743AT in existing designs?

A: Yes. FOD2743BTV is electrically and mechanically equivalent to FOD2743AT. All critical parameters—isolation voltage, current transfer ratio, output voltage and current ratings, saturation voltage, and operating temperature range—are identical. The 8-DIP package dimensions and through-hole mounting are unchanged, allowing direct substitution without PCB redesign.

Q: What is the primary difference between FOD2743AT and FOD2743BTV?

A: The primary difference is product status. FOD2743AT is Obsolete, while FOD2743BTV is Active. FOD2743BTV also carries ROHS3 compliance certification. All electrical and mechanical specifications remain identical.

Q: Are there any packaging differences between these parts?

A: Both components use the 8-DIP (0.400", 10.16mm) package for through-hole mounting. FOD2743AT is supplied in standard packaging, while FOD2743BTV is supplied in Tube packaging. This difference does not affect electrical performance or mechanical compatibility.

Q: Does FOD2743BTV meet current regulatory requirements?

A: Yes. FOD2743BTV is ROHS3 compliant and REACH Unaffected, meeting current environmental and regulatory standards. FOD2743AT regulatory status is not specified in available documentation.

Q: Are there any performance differences in isolation voltage or current transfer ratio?

A: No. Both parts maintain 5000Vrms isolation voltage and identical current transfer ratio specifications of 50% (Min) to 100% (Max) at 1mA input current.